A 17,000-kg tractor-trailer rig has a frontal area of 9.2 m2, a drag coefficient of 0.96, a rolling resistance coefficient of 0.05 (multiplying the weight of a vehicle by the rolling resistance coefficient gives the rolling resistance), a bearing friction resistance of 350 N, and a maximum speed of 110 km/h on a level road during steady cruising in calm weather with an air density of 1.25 kg/m3. Now a fairing is installed to the front of the rig to suppress separation and to streamline the flow to the top surface, and the drag coefficient is reduced to 0.76. Determine the maximum speed of the rig with the fairing.

Q: Janie likes to drive with a tennis ball on her car antenna. The ball diameter is D = 2.62 in and its…

A: We need to first determine the velocity of the car and the frontal area of the ball. It will help to…

Q: Discuss the importance of lift and drag with the help of examples.

A: Lift : example - wings of air plane. The profile of a wing is such that there is a difference in…

Q: A disk-gap-band parachute has a drag of 1600 lbf when tested at 15 mi/h in air at 20°C and 1 atm.…

A: Given data:-  Drag force =1600 lbf=7117.155 N Velocity =15 mi/h=6.7056 m/s The diameter of the…

Q: A bicyclist of mass 70 kg supplies 300 W of power while riding into a 3 m/s headwind. The frontal…

A: Given data: m=70 kgP=300 Wvw=3 m/sA=0.36 m2CD=0.88 Need to determine the speed of the cyclist.

Q: An aircraft has a total mass of (1.26x10^2) kg and a wing area of (2.3000x10^1) m². It operated with…

A: Chord line is the line joining the leading and tailing edges of the airfoil. Profile line is defined…

Q: A shuttlecock is launched from the ground with an initial speed of 37.3135 m/s at an angle of 7.8471…

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Q: What are the three main components of the standard atmosphere and which is most significant to…

A: The standard atmosphere is a model of the Earth's atmosphere that is widely used as a reference for…

Q: A shuttlecock is launched from the ground with an initial speed of 34.6092 m/s at an angle of 5.462…

A: Given When drag force becomes equal to weight net force is zero Final velocity can be determined as

Q: A sphere (Cd = 0.2) 1 ft in diameter travels at 100 ft/sec in standard atmospheric air. What is the…

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Q: A shuttlecock is launched from the ground with an initial speed of 33.3163 m/s at an angle of 8.1977…

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Q: A turbojet engine weight 7 kN and has a wing area of 20 m2. The drag coefficient of aircraft is…

A: Turbojet engine weight, FL=7 kN=7*103 N Wing area, A=20 m2 Drag coefficient of air craft,…

Q: The power delivered to the wheels of a car is used to overcome aerodynamic drag. Compare the amount…

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Q: discuss various designs of winglets to reduce induced drag.

A: Solution: Given Data and to find: discuss various designs of winglets to reduce induced drag

Q: power available at sea-level PA; 0 = 140 kW wingspan b = 11 m wing area S = 16 m2 zero-lift drag…

A: Given data: Power available at sea-level: PA;0 = 140 kW = 140000 W Wingspan: b = 11 m Wing area: S =…

Q: Estimate the drag force on the fuselage shown below for a cruising speed of 200 m/s at 10,000 m.

A: Given that, Cruising speed of the fuselage, V=200 m/sec,Height of the fuselage, H=10,000 m/sec, The…

Q: A 70 kg bicyclist is riding her 15 kg bicycle downhill on a road with a slope of 8º without pedaling…

A: terminal velocity is reached  when there is no external force acting on the body that is in this…

Q: (See Fluids in the News article "Why Winglets?) It is estimated that by installing appropriately…

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Q: A skydiver jumps from (5.5000x10^3) m with no parachute into a giant net. The mass of the skydiver…

A: Given data Mass of skydiver = m = 1.05 x102 kg = 105 kg  Projected Area = A = 0.45 m2 Pressure = P =…

Q: A smooth aluminum sphere hangs in air on a 0.5 m-long cable. The sphere has a diameter of 10 cm and…

A: (a) To find: The magnitude of drag force. Given: The weight of the sphere is W=1.5 N. The radius of…

Q: Explain briefly what is meant by drag and its form.

A: Drag is the force that opposes the motion of the aircraft through the air. It is generated by the…

Q: Problem 7: A small light plane with a wing area of 150ft² is cruising at 120mph at 7000ft altitude.…

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Q: An aircraft has a total mass of (1.320x10^2) kg and a wing area of (2.90x10^1) m². It operated with…

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Q: When the "Area rule" is applied, which aerodynamic coefficient it affects the most? O drag…

A: According to area rule two panes with same longitudinal cross sectional area distribution have same…

Q: For the vehicle whose specifications are given below, calculate the engine power required in kW to…

A: Givenslope=12%=12100=0.12tanθ=0.12⇒θ=tan-10.12=6.84ovehicle speed (v)=99 km/h=99×518m/s=27.5 m/swind…

Q: Calculate the velocity with air drag in m/s. Take the size across of the drop to be 3.8 mm, the…

A: Size across the drop, d= 3.8 mm= 0.0038 m  Hence, radius, r= d2= 0.00382= 0.0019 m Density of air,…

Q: What is the formula and variables in finding the air drag of a motorcycle?

A: Given question: What is the formula and variables in finding the air drag of a motorcycle. The given…

Q: ent of a vehicle increases when its windows are rolled down or its sunroof is opened. A sports car…

A: The frontal area of the car, A = 18 ft2.Drag coefficient when the sunroof is closed, CD1 = 0.32.Drag…

Q: Discuss the importance of lift and drag with the help of examples.

A: we will  discuss the importance of drag & lift by an example of aeroplane aerofoilsection

Q: A shuttlecock is launched from the ground with an initial speed of 34.6092 m/s at an angle of 5.462…

A:

Q: power available at sea-level PA; 0 = 140 kW wingspan b = 11 m wing area S = 16 m2 zero-lift drag…

A: Given data: Power available at sea-level: PA;0 = 140 kW Wingspan: b = 11 m Wing area: S = 16 m2…

Q: 2. Taking off on a dry cement runway, to minimize the impact of aerodynamics on the acceleration,…

A: Ans: Option(D) 1.7o

Q: How much thrust must the jet's engines provide to cruise at 280 m/s at an altitude where the air…

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Q: power available at sea-level PA; 0 = 140 kW wingspan b = 11 m wing area S = 16 m2 zero-lift drag…

A: To Find : The maximum rate of climb at sea level and at altitude 5000 m Given : The Power available…

Q: 3.) Determine the induced drag force developed if a wing of span area 36m^2 and chord of 2.4m has a…

A: Given:Wing span area (S) = 36 m^2Wing chord (c) = 2.4 mLift coefficient (CL) = 1.2Velocity (V) = 52…

Q: How much thrust must the jet's engines provide to cruise at 280 m/s at an altitude where the air…

A:

Q: The drag coefficient of a vehicle increases when its windows are rolled down or its sunroof is…

A: Given data: The frontal area of the car, A = 18 ft2. Drag coefficient when the sunroof is closed,…